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Installing four SLI-ready graphics cards

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5.2.4 Installing four SLI-ready graphics cards 1. Prepare four SLI-ready graphics cards. 2. Insert the four graphics card into the PCIEX16 slots. If your motherboard has more than two PCIEX16 slots, refer to Chapter 2 in this user manual for the locations of the PCIEX16 slots recommended for multi-graphics card installation. 3. Ensure that the cards are properly seated on the slots. 4. Align and firmly insert the 4-Way SLI bridge connector to the goldfingers on each graphics card. Ensure that the connector is firmly in place. 5. Connect four independent auxiliary power sources from the power supply to the four graphics cards separately. 6. Connect a VGA or a DVI cable to the graphics card. 4-Way SLI bridge 5-8 Chapter 5: Multiple GPU technology support

Section	Page
Contents	3
Notices	7
Safety information	9
About this guide	10
P9X79 WS specifications summary	12
Chapter 1: Product introduction	17
1.1 Welcome!	19
1.2 Package contents	19
1.3 Special features	20
1.3.1 Product highlights	20
1.3.2 ASUS Workstation Exclusive Features	21
1.3.3 ASUS features	22
1.3.4 Other special features	26
Chapter 2: Hardware information	27
2.1 Before you proceed	29
2.2 Motherboard overview	30
2.2.1 Motherboard layout	30
2.2.2 Layout contents	31
2.2.3 Central Processing Unit (CPU)	32
2.2.4 System memory	33
2.2.5 Expansion slots	35
2.2.6 Onboard switches	37
2.2.7 Onboard LEDs	40
2.2.8 Jumper	49
2.2.9 Internal connectors	51
2.3 Building your computer system	63
2.3.1 Additional tools and components to build a PC system	63
2.3.2 CPU installation	64
2.3.3 CPU heatsink and fan assembly installation	66
2.3.4 DIMM installation	67
2.3.5 Motherboard installation	68
2.3.6 ATX Power connection	70
2.3.7 SATA device connection	71
2.3.8 Front I/O Connector	72
2.3.9 Rear panel connection	73
2.3.10 Audio I/O connections	74
2.3.11 USB BIOS Flashback	77
2.4 Starting up for the first time	78
2.5 Turning off the computer	79
Chapter 3: BIOS setup	81
3.1 Knowing BIOS	81
3.2 BIOS setup program	81
3.2.1 EZ Mode	82
3.2.2 Advanced Mode	83
3.3 Main menu	85
3.4 Ai Tweaker menu	87
3.4.1 DRAM Timing Control	90
3.4.1 DIGI+ Power Control	100
3.4.2 CPU Performance Settings	104
3.5 Advanced menu	109
3.5.1 CPU Configuration	110
3.5.2 CPU Power Management Configuration	111
3.5.3 System Agent Configuration	112
3.5.4 PCH Configuration	113
3.5.5 SATA Configuration	113
3.5.6 USB Configuration	116
3.5.7 Onboard Devices Configuraton	117
3.5.8 APM	119
3.6 Monitor menu	120
3.7 Boot menu	123
3.8 Tools menu	124
3.8.1 ASUS EZ Flash 2 Utility	125
3.8.2 ASUS DRAM SPD Information	125
3.8.3 ASUS O.C. Profile	126
3.8.4 ASUS Drive Xpert	127
3.9 Exit menu	128
3.10 Updating BIOS	129
3.10.1 ASUS Update utility	129
3.10.2 ASUS EZ Flash 2 utility	132
3.10.3 ASUS CrashFree BIOS 3 utility	133
3.10.4 ASUS BIOS Updater	134
Chapter 4: Software support	137
4.1 Installing an operating system	137
4.2 Support DVD information	137
4.2.1 Running the support DVD	137
4.2.2 Obtaining the software manuals	138
4.3 Software information	139
4.3.1 AI Suite II	139
4.3.2 TurboV EVO	140
4.3.3 DIGI+ Power Control	144
4.3.4 EPU	146
4.3.5 FAN Xpert+	147
4.3.6 Probe II	148
4.3.7 Sensor Recorder	149
4.3.8 USB 3.0 Boost	150
4.3.9 ASUS SSD Caching	151
4.3.10 ASUS Update	152
4.3.11 MyLogo2	153
4.3.12 Audio configurations	155
4.4 RAID configurations	156
4.4.1 RAID definitions	156
4.4.2 Installing Serial ATA hard disks	157
4.4.3 Setting the RAID item in BIOS	157
4.4.4 Intel® Rapid Storage Technology Option ROM utility	157
4.4.5 Marvell RAID utility	161
4.5 Creating a RAID driver disk	165
4.5.1 Creating a RAID driver disk without entering the OS	165
4.5.2 Creating a RAID driver disk in Windows®	165
4.5.3 Installing the RAID driver during Windows® OS installation	166
4.5.4 Using a USB floppy disk drive	167
Chapter 5: Multiple GPU technology support	169
5.1 ATI® CrossFireX™ technology	171
5.1.1 Requirements	171
5.1.2 Before you begin	171
5.1.3 Installing CrossFireX graphics cards	172
5.1.4 Installing the device drivers	173
5.1.5 Enabling the ATI® CrossFireX™ technology	173
5.2 NVIDIA® SLI™ technology	175
5.2.1 Requirements	175
5.2.2 Installing two SLI-ready graphics cards	176
5.2.3 Installing three SLI-ready graphics cards	177
5.2.4 Installing four SLI-ready graphics cards	178
5.2.5 Installing the device drivers	179
5.2.6 Enabling the NVIDIA® SLI™ technology	179
5.3 NVIDIA® CUDA™ technology	182
5.3.1 Requirements	182